期刊
POLIMERY
卷 50, 期 1, 页码 60-63出版社
INDUSTRIAL CHEMISTRY RESEARCH INST
DOI: 10.14314/polimery.2005.060
关键词
syndiotactic polystyrene; catalytic depolymerization; catalysts; transition metal; support; yield of styrene
Syndiotactic polystyrene was degraded in an atmosphere of N-2 or H-2 at 375 or 400 degreesC in the presence of transition metal catalysts (Cr, Ni, Mo, Co or Fe) on the support (Al2O3, SiO2). Styrene, ethyl benzene, cc-methylstyrene, cumene, toluene, benzene as well as bi- and tricyclic hydrocarbons were found in the reaction products. Effects of degradation conditions on the products compositions were discussed. The highest yield of styrene monomer (>80%) was reached when iron-based catalysts were used.
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